The cobalt complexes [PimPri,But]CoI}I and [PimPri,But]Co(NO3)}NO3 are synthesized by the reaction of the sterically demanding tris[2-(1-isopropyl-4-tert-butylimidazolyl)]phosphine [PimPri,But] with CoI2 and Co(NO3)2, respectively; comparison of the structures of [PimPri,But]M(NO3)}+(M = Co, Zn) with those of the structurally analogous, but neutral, tris(3-tert-butylpyrazolyl)hydroborato complexes [TpBut]M(NO3) illustrates that the charged complexes have a greater tendency to adopt bidentate coordination of the nitrate ligand.
钴配合物[PimPri,But]CoI}I和[PimPri,But]Co(
NO3)} 分别由空间位阻大的三[2-(1-异丙基-4-叔丁基
咪唑基)]膦[PimPri,But]与
CoI2和Co( )2反应合成;将[PimPri,But]M( )}+(M = Co, Zn)与结构类似但中性的三(3-叔丁基
吡唑基)
硼氢化物配合物[TpBut]M( )的结构进行比较,可以发现带电的配合物更倾向于采用双齿配位
硝酸盐配体。